Look at your bathroom fixtures. If they’re covered in white, crusty deposits that look like dandruff from a porcelain monster, you’ve got hard water. That’s limescale, and it’s like the water’s way of leaving chalky graffiti everywhere. Soft water doesn’t leave those marks—your shower door stays clear, and your pipes stay happy. Meanwhile, hard water is slowly turning your kettle into a stalactite cave.
Here’s a surprising fact: 90% of U.S. homes have hard water, according to the U.S. Geological Survey. That means millions of people are fighting a losing battle against white crust. If you’ve ever scrubbed a tea kettle and thought, “Why do I live in a limestone quarry?”—now you know.
